Perhaps you should try some spelling variations:
1973 communication » 13 communication, 1.3 communication, 19 communication
trade information » price information, private information, trade integration
information rates » information states, information ratio, information rules
technology trade » technology trends, technology transfer, technology transfers
de developpement » sme development
developpement de » developpement des, developpement durable
de afrique » de l'afrique, en afrique, l afrique
rates van » rates hans, rates a, rates a4
costs de » costs _, costs 4, costs a

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology trade information rates van 1973 communication costs de developpement de afrique.*.